https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88998
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P2
Known to work| |6.4.0
Target Milestone|--- |7.5
Summary|bad codegen with mmx |[7/8/9 Regression] bad
|instructions for |codegen with mmx
|unordered_map |instructions for
| |unordered_map
Known to fail| |7.3.1, 8.2.1, 9.0
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, I see no explicit MMX reg/intrinsic uses in the testcase if I am not
mistaken so the compiler should not end up using MMX.
GCC 6 "failed" to do this optimization, but the issue might have been latent
there.
